Stroller seat



FIG. 1 is a perspective view, taken from the front, right side, of the stroller seat according to my design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof, the right side being a mirror image thereof; and,

FIG. 5 is a perspective view, taken from the front right side thereof.

The broken lines for the stroller frame in FIG. 1 are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a stroller seat, as shown and described. 